Update copyright for recent changes.
diff --git a/Objects/setobject.c b/Objects/setobject.c
index d08ff5f..eb223a3 100644
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -3,7 +3,7 @@
    Written and maintained by Raymond D. Hettinger <python@rcn.com>
    Derived from Lib/sets.py and Objects/dictobject.c.
 
-   Copyright (c) 2003-2007 Python Software Foundation.
+   Copyright (c) 2003-2008 Python Software Foundation.
    All rights reserved.
 */